The best instrument for cash at IB

Hi everybody,
My base currency at Interactive Brokers is euro.
I am looking for the best instrument to invest my cash in: mutual money market funds, short-term government bills (france, italy...), EONIA ETFs, schatz futures ?
My cash being around 30k eur, I believe the best way is to use ETF such as CSH FP Equity, CE3 FP Equity, or MTA FP Equity, even if the fee (0.1% of trade value) is a bit high for a money market fund.
I see IB is not offering euro-denominated bonds nor euro-denominated mutual funds...
If you have any good idea, thanks in advance for letting me know!